CVE-2026-25723

Claude Code is an agentic coding tool. Prior to version 2.0.55, Claude Code failed to properly validate commands using piped sed operations with the echo command, allowing attackers to bypass file write restrictions. This vulnerability enabled writing to sensitive directories like the .claude folder and paths outside the project scope. Exploiting this required the ability to execute commands through Claude Code with the "accept edits" feature enabled. This issue has been patched in version 2.0.55.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/anthropics/claude-code/security/advisories/GHSA-mhg7-666j-cqg4	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:*

History

09 Feb 2026, 14:50

Type	Values Removed	Values Added
References	~~() https://github.com/anthropics/claude-code/security/advisories/GHSA-mhg7-666j-cqg4 -~~	() https://github.com/anthropics/claude-code/security/advisories/GHSA-mhg7-666j-cqg4 - Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.5
First Time		Anthropic Anthropic claude Code
CPE		cpe:2.3:a:anthropic:claude_code::::::node.js::*

06 Feb 2026, 18:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-06 18:15

Updated : 2026-02-09 14:50

NVD link : CVE-2026-25723

Mitre link : CVE-2026-25723

CVE.ORG link : CVE-2026-25723

JSON object : View

Products Affected

anthropic

claude_code

CWE

CWE-20

Improper Input Validation

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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